Insert here the set of "Nested Parties" (firm identification "nested" within additional repeating group) fields defined in
"Common Components of Application Messages"
Used for NestedPartyRole=Leg Clearing Firm/Account, Leg Account/Account Type
When reporting an Execution, LegOrderQty may be used on Execution Report to echo back original LegOrderQty submission.
This field should be used to specify OrderQty at the leg level rather than LegQty (deprecated).
For FX Futures can be used to express the notional value of a trade when LegLastQty and other quantity fields are expressed
in terms of number of contracts - LegContractMultiplier (231) is required in this case.